2805802
Descripción
Test por Alex Rizvi, actualizado hace más de 1 año
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Creado por Alex Rizvi
hace casi 9 años
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Pregunta 1
Pregunta
When a ball is dropped from a height onto a loop the loop the energy transfer is Kinetic to GPE
Respuesta
- True
- False
Pregunta 2
Pregunta
Mrs Smith Would like to fit draught proofing into her house for a fee of £150. This will save 6000w of power for heating every two hours. Each unit cost 5p, What is the Payback time of the draught proofing?
Respuesta
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16.7 Days
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63.7 Days
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28.3 Days
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10.2 Days
Pregunta 3
Pregunta
A current of 2 A flows for 30 seconds through a lamp. How much charge has moved?
Respuesta
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60 Coulombs
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60 Joules
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25 Coulombs
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15 Watts
Pregunta 4
Pregunta
A current of 12 A flows for 20 minutes into an electric cooker. How much charge has the cooker used?
Respuesta
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14,400 Coulombs
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27 Coulombs
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50 Coulombs
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16,000 Coulombs
Pregunta 5
Pregunta
Watts are a measurement of energy
Respuesta
- True
- False
Pregunta 6
Pregunta
Joules are a measurement of energy
Respuesta
- True
- False
Pregunta 7
Pregunta
What is current measured in?
Respuesta
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Coulombs
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Joules
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Watts
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Volts
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Amps
Pregunta 8
Pregunta
How is current measured?
Respuesta
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Voltmeter
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Ammeter
Pregunta 9
Pregunta
What is the equation to work out power
Respuesta
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P= V x I
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P= I/V
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P= V/I
Pregunta 10
Pregunta
Which Circuit do you connect an ammeter to measure the current?
Respuesta
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Series
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Parallel
Pregunta 11
Pregunta
A Petrol car requires 5,000J of energy to run properly. 3,467J of that are wasted as Heat(Thermal) energy. How much usefule energy is there, What type of energy, and what is the efficiency of the car?
Respuesta
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1,533J ,Thermal, 32.98%
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1235J, Electrical, 30.66%
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1533J, Kinetic, 30.66%
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1435J, Kinetic, 54.983%
Pregunta 12
Pregunta
What is 1KW equivalent to?
Respuesta
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10W
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100W
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1000W
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10000W
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1000000W
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